i have the same issues with this type of ppl..what you do is:

1st. get a guard to go talk to them.

2nd. if they still don't listen, get a guard and you follow and talk to them.

3rd. go to management complain and ask them to issues a complaint letter/get the owner contact and tell the owner your problem (if the unit above you is a tenant)

mine was worse, every night they drill the wall, drop guli, pull chair/table nail some stuff..apa apa pun ada, this happen from 11pm till 4am. after talk to them NICELY, they have stop their action and another problem occur, my ceiling start leaking, in my kitchen then now in my master bed room @_@

damn bad luck don't know what they do..but the issues is fix after 2 weeks..